<template>
    <div>
      <div style="margin: 10px 0">
        <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search" v-model="name"></el-input>
        <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
        <el-button type="warning" @click="reset">重置</el-button>
      </div>
      <div style="margin: 10px 0">
        <el-upload :action="'http://' + 'localhost' + ':8080/file/upload'" :show-file-list="false"
                   :on-success="handleFileUploadSuccess" style="display: inline-block" >
          <el-button type="primary" class="ml-5">上传文件 <i class="el-icon-top"></i></el-button>
        </el-upload>
        <el-popconfirm
            class="ml-5"
            confirm-button-text='确定'
            cancel-button-text='我再想想'
            icon="el-icon-info"
            icon-color="red"
            title="您确定批量删除这些数据吗？"
            @confirm="delBatch"
        >
          <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
        </el-popconfirm>
  
      </div>
      <el-table :data="tableData" border stripe :header-cell-class-name="'headerBg'"
                @selection-change="handleSelectionChange">
        <el-table-column type="selection" width="55"></el-table-column>
        <el-table-column prop="id" label="ID" width="80"></el-table-column>
        <el-table-column prop="name" label="文件名称"></el-table-column>
        <el-table-column prop="type" label="文件类型"></el-table-column>
        <el-table-column prop="size" label="文件大小(kb)"></el-table-column>
        <!-- <el-table-column label="预览">
          <template slot-scope="scope">
            <el-button type="primary" @click="preview(scope.row.url)">预览</el-button>
          </template>
        </el-table-column> -->
        <el-table-column label="下载">
          <template slot-scope="scope">
            <el-button type="primary" @click="download(scope.row.url)">下载</el-button>
          </template>
        </el-table-column>
        <el-table-column label="启用">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.enable" active-color="#13ce66" inactive-color="#ccc"
                       @change="changeEnable(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200" align="center">
          <template slot-scope="scope">
            <el-popconfirm
                class="ml-5"
                confirm-button-text='确定'
                cancel-button-text='我再想想'
                icon="el-icon-info"
                icon-color="red"
                title="您确定删除吗？"
                @confirm="del(scope.row.id)"
            >
              <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
            </el-popconfirm>
          </template>
        </el-table-column>
      </el-table>
  
      <div style="padding: 10px 0">
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="pageNum"
            :page-sizes="[2, 5, 10, 20]"
            :page-size="pageSize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
      </div>
  
    </div>
  </template>
  
  <script>
  //import {serverIp} from "../../public/config";
  import request from '@/utils/request';
  // import { ElMessage } from 'element-plus';
  export default {
    name: "FileView",
    data() {
      return {
        // serverIp: serverIp,
        tableData: [],
        name: '',
        multipleSelection: [],
        pageNum: 1,
        pageSize: 10,
        total: 0
      }
    },
    created() {
      this.load()
    },
    methods: {
      load() {
        request.get("/file/page", {
          params: {
            pageNum: this.pageNum,
            pageSize: this.pageSize,
            name: this.name,
          }
        }).then(res => {
  
          this.tableData = res.data.records
          this.total = res.data.total
  
        })
      },
      changeEnable(row) {
        request.post("/file/update", row).then(res => {
          if (res.code === '200') {
            this.$message.success("操作成功")
          }
        })
      },
      del(id) {
        request.delete("/file/" + id).then(res => {
          if (res.code === '200') {
            this.$message.success("删除成功")
            this.load()
          } else {
            this.$message.error("删除失败")
          }
        })
      },
      handleSelectionChange(val) {
        console.log(val)
        this.multipleSelection = val
      },
      delBatch() {
        let ids = this.multipleSelection.map(v => v.id)  // [{}, {}, {}] => [1,2,3]
        request.post("/file/del/batch", ids).then(res => {
          if (res.code === '200') {
            this.$message.success("批量删除成功")
            this.load()
          } else {
            this.$message.error("批量删除失败")
          }
        })
      },
      reset() {
        this.name = ""
        this.load()
      },
      handleSizeChange(pageSize) {
        console.log(pageSize)
        this.pageSize = pageSize
        this.load()
      },
      handleCurrentChange(pageNum) {
        console.log(pageNum)
        this.pageNum = pageNum
        this.load()
      },
      handleFileUploadSuccess(res) {
        console.log(res)
        this.$message.success("上传成功")
        this.load()
      },
      download(url) {
        window.open(url)
      },
      preview(url) {
        window.open('https://file.keking.cn/onlinePreview?url=' + encodeURIComponent(window.btoa((url))))
      },


      // beforeFileUpload(file) {
      //   const isJPGorPNG = /image\/(jpg|png)/.test(file.type);
      //   const isLt2M = file.size / 1024 / 1024 < 2;

      //   if (!isJPGorPNG) {
      //     this.$message.error('上传文件只能是 JPG 或 PNG 格式!');
      //   }
      //   if (!isLt2M) {
      //     this.$message.error('上传文件大小不能超过 2MB!');
      //   }
      //   return isJPGorPNG && isLt2M;
      // },
    }
  }
  </script>
  
  <style scoped>
  
  </style>
  